Microstructures and multiferroic properties of textured Bi0.8La0.2FeO3 thin films |
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| Authors: | Yi Zhang Chang-Sheng Yuan Yan-Feng Chen |
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| Institution: | National Laboratory of Solid State Microstructures, Department of Materials Science and Engineering, Nanjing University, Nanjing 210093, PR China |
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| Abstract: | La-substituted BiFeO3, Bi0.8La0.2FeO3, thin films were fabricated on Pt/Ti/SiO2/Si substrates by pulsed laser deposition. X-ray diffraction and high-resolution transmission electron microscope were used to analyze the structures of the films. The results show the films fabricated under optimized growth condition are (0 1 2) textured. X-ray photoemission spectroscopy results indicate that the oxidation state of Fe ion is Fe3+ in the films without detectable Fe2+. The films show low leakage current and excellent dielectric characters. Multiferroic properties with a remnant ferroelectric polarization of 5.2 μC/cm2 and a remanent magnetization of 0.02 μB/Fe were established. These results have some implications for further research. |
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| Keywords: | BiFeO3 Microstructure Multiferroic La-substituted |
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